Detachable sprocket-wheel.



O. GULLMAN.

DETAUHABLE SPROGKET WHEEL.

APPLICATION FILED JUNE a, 1908.

958,955. Patented May 24, 1910.

E WVf/VfO/F 0660 Caz/ma?? ing and forming a part hereof, is a o'r'ro cm, or cmcaao, :mnntoxs.

DETACHAIBLE' Specification of Letters Patent.

Patented May 24, 1910.

Application filed June 8, 1908. In. 487,378.

To all whom it may Be it known that I, O'rro 0mm, a citizen of the United States, and a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Detachable Sprocket- Wheels, of which the following, when taken in connection with the drawing accom nyand complete description, suflicient to enable those skilled in the art to which it pertains to understand, make, and-use the same. This invention relates to sprocket wheels used principally on the counter shafts of what are known as .side drive chain gear automobiles; and the object of the invention is 'toobtain asprocket wheel which can be shifted laterally to adjust it on the counter or jack shaft to line it up with the s rocket wheel corresponding therewith on t e rear wheel of the automobile. v

To those skilled in the art it is known that the sprocket wheel on the counter shaft or jack shaft of automobiles of the class to which the device embodying this invention is applied should be lined with the rear wheel sprocket wheels on the driving wheels of the automobile when the automobile is at the factory; and that, because by use of the automobile the springs thereof, at times, sag one or the other way thereby bringing the sprocket wheels out of line, means should be provided to easil line up such sprocket wheels whenever I esired; and this deviceis' designed to permit the ready shifting of the sprocket wheel on the jack shaft, to again lme it up with its corresponding sprocket wheel on the rear wheel of the automobile and to secure the same in its newly adjusted position.

In the drawing referred to Figure 1 is a front elevation of a device embodying this invention, mounted on a counter shaft, such counter shaft beingshown insection. Fig. 2

is a'sectional view of the device on line 22 .it to nut Collar or sleeve B is split that is, it has apart thereof cutout there n1 throughout the entire length, as indicated by broken lines E. p

The counter shaft A .and collar B are also counter sunk in the usual way to 't the key F to be at in place to lock t e counter shaft and co will be held -dly to the counter shaft to rotate therewi Suchcollar is also "recessed on the conical periphery thereof to permit the insertion of the key G' and H is a sprocket wheel having a central hole therein corresplcnding with the conical periptlajeif'iyt I is anut provided with internal screw threads corresponding with and fitting the screw threads 0 on'collar or sleeve B. The

nut I is cut away as at J, J, (Fig. 1),.to per-v mit the placing lace.

K, are holes in sprocket wheel H and L is a split pin in place in one of the holes K. The urpose of the split in L is to lock the in place after the evice has been assembled,'and such holes are so placed that but little to up; the nut I from a giver;

ition'is m to' expose some one o 53:11- holes sii that pin L can be inserted therein. 7

The several partsof the device may be of a wrench thereon to turn assembled as follows;'Collar or sleeve G is placed on counter shaft A and sprocket wheel H is placed on the sleeve or collar B. Feathers or keys- F and G are in place and the sprocket wheel H lined up with thecorresponding sprocket wheel on the rearwheel ofthe automobile. Care is taken that a reasonably'ti t fit is, at such time, obtained between t e sleeve B and counter shaft :A and between the sprocket wheel H and the collar or sleeve B. Nut F' isthen at. in lace on collar or sleeve B and turn until rought into close contact with the adjacent face of s rocket wheel H. A wrench or key is then p need on the nut H and such nut turned against the sprocket wheel and thereby such sprocket wheel is forced laterally further onto the cone shaped r so that the sprocket wheel together.

portion of the sleeve B and the cut or openin of such sleeve (between lines E, E,) re need until the sleeve fits tightly to the counter shaft. The s lit pin L is then inserted in the expose one of the holes K and the ends of such split in are opened as shown in the drawing. en thus assembled the sprocket wheel H, collar or sleeve B, and counter shaft A are locked firmly To re-adjust the sprocket wheel H; that is, to move it laterally on counter shaft A, the split pin L is removed, nut I is loosened, the sprocket Wheel is loosened on collar B and such collar is moved on the counter shaft, after which the nut I is again tightened in place and sprocket pin L again inserted in the exposed one of the holes K.

The sprocket wheel H can be removed at any time and a sprocket wheel with a different number of sprockets substituted therefor, in substantially the same manner that vsuch sprocket wheel H is placed on the automobile and adjusted.

Having thus described my invention and the construction of a device embodying the vlded with internal screw threads arranged to fit the screw threads on the sleeve, and a split pin, said sprocket wheel being provided with holes and said nut arranged to cover the said holes and provided with a flat side arranged to successively uncover said holes as the nut is turned into place, so that when the split pin is in said uncovered hole the nut is locked; substantially as described.

OTTO CULLMAN. In the presence of CHARLES TURNER BRowN, Com A. ADAMS. 

